Oscillator circuit having a temperature dependence

Details Oscillator circuit having a temperature dependence Oscillator circuit having a temperature dependence

2007-04-24

2007-04-24

Pascal, Robert (Department: 2817)

Oscillators

Frequency stabilization

Temperature or current responsive means in circuit

C331S049000, C331S056000, C327S101000, C327S512000

Reexamination Certificate

active

11088808

ABSTRACT:
An oscillator circuit includes a current source for generating a current depending on the ambient temperature, a plurality of oscillators for oscillating at respective periods depending on the current from the current source and based on different relations between the ambient temperature and the periods, and a frequency demultiplication unit for receiving an output signal from one of the oscillators selected by a period selecting circuit103. The frequency dividing ratio of the frequency demultiplication circuit is set so that a higher ambient temperature provides a smaller frequency dividing ratio.

REFERENCES:
patent: 5604468 (1997-02-01), Gillig
patent: 5856766 (1999-01-01), Gillig et al.
patent: 6326850 (2001-12-01), Casagrande
patent: 2003-100074 (2003-04-01), None

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